feat(devin-lang): Add support for DevIn language syntax highlighting and completion. #101

The commit introduces several changes to add support for the DevIn programming language in an IntelliJ IDEA plugin. The `DevInFile` class is modified to use the correct `DevInFileType` instance. A new `CustomVariable` enum is added to provide static variables for completion.

Author: phodal

.github/workflows/build.yml

@@ -84,7 +84,7 @@ jobs:
 
       # Run tests
       - name: Run Tests
-        run: ./gradlew check -Dorg.gradle.daemon.performance.enable-monitoring=false
+        run: ./gradlew check -Dorg.gradle.daemon.performance.enable-monitoring=false -Dorg.gradle.jvmargs=-Xmx1g
 
       # Collect Tests Result of failed tests
       - name: Collect Tests Result

exts/devin-lang/src/main/kotlin/cc/unitmesh/language/DevInCompletionContributor.kt

@@ -1,9 +1,13 @@
 package cc.unitmesh.language
 
+import cc.unitmesh.language.psi.DevInTypes
 import com.intellij.codeInsight.completion.CompletionContributor
+import com.intellij.codeInsight.completion.CompletionType
+import com.intellij.patterns.PlatformPatterns.psiElement
+import cc.unitmesh.language.completion.VariableProvider
 
 class DevInCompletionContributor : CompletionContributor() {
     init {
-//        extend(CompletionType.BASIC, psiElement(DevInTypes), VariableProvider())
+        extend(CompletionType.BASIC, psiElement(DevInTypes.REF_BLOCK), VariableProvider())
     }
 }

exts/devin-lang/src/main/kotlin/cc/unitmesh/language/DevInFileType.kt

@@ -1,11 +1,12 @@
 package cc.unitmesh.language
 
+import com.intellij.openapi.fileTypes.FileType
 import com.intellij.openapi.fileTypes.LanguageFileType
 import com.intellij.openapi.vfs.VirtualFile
 import javax.swing.Icon
 
-object DevInFileType : LanguageFileType(DevInLanguage) {
-    override fun getName(): String = "DevIn File"
+class DevInFileType : LanguageFileType(DevInLanguage) {
+    override fun getName(): String = "DevInFile"
 
     override fun getIcon(): Icon = DevInIcons.DEFAULT
 
@@ -14,4 +15,9 @@ object DevInFileType : LanguageFileType(DevInLanguage) {
     override fun getCharset(file: VirtualFile, content: ByteArray): String = "UTF-8"
 
     override fun getDescription(): String = "DevIn file"
+
+    companion object {
+        val INSTANCE: FileType = DevInFileType()
+    }
+
 }

exts/devin-lang/src/main/kotlin/cc/unitmesh/language/DevInSyntaxHighlighter.kt

@@ -0,0 +1,29 @@
+package cc.unitmesh.language
+
+import cc.unitmesh.language.lexer.DevInTokenType
+import cc.unitmesh.language.psi.DevInElementType
+import cc.unitmesh.language.psi.DevInTypes
+import com.intellij.lexer.Lexer
+import com.intellij.openapi.editor.DefaultLanguageHighlighterColors
+import com.intellij.openapi.editor.colors.TextAttributesKey
+import com.intellij.openapi.fileTypes.SyntaxHighlighter
+import com.intellij.openapi.fileTypes.SyntaxHighlighterBase
+import com.intellij.openapi.fileTypes.SyntaxHighlighterBase.fillMap
+import com.intellij.psi.tree.IElementType
+
+class DevInSyntaxHighlighter : SyntaxHighlighter {
+    override fun getHighlightingLexer(): Lexer = DevInLexerAdapter()
+
+    override fun getTokenHighlights(tokenType: IElementType?): Array<TextAttributesKey> {
+        return SyntaxHighlighterBase.pack(ATTRIBUTES[tokenType])
+    }
+
+    companion object {
+        private val ATTRIBUTES: MutableMap<IElementType, TextAttributesKey> = HashMap()
+
+        init {
+            ATTRIBUTES[DevInTypes.REF_BLOCK] = DefaultLanguageHighlighterColors.IDENTIFIER
+        }
+    }
+
+}

exts/devin-lang/src/main/kotlin/cc/unitmesh/language/DevInSyntaxHighlighterFactory.kt

@@ -7,6 +7,6 @@ import com.intellij.openapi.vfs.VirtualFile
 
 class DevInSyntaxHighlighterFactory : SyntaxHighlighterFactory() {
     override fun getSyntaxHighlighter(project: Project?, virtualFile: VirtualFile?): SyntaxHighlighter {
-        TODO("Not yet implemented")
+        return DevInSyntaxHighlighter()
     }
 }

exts/devin-lang/src/main/kotlin/cc/unitmesh/language/DevInTypedHandler.kt

@@ -1,9 +1,11 @@
 package cc.unitmesh.language
 
 import cc.unitmesh.language.psi.DevInFile
+import com.intellij.codeInsight.AutoPopupController
 import com.intellij.codeInsight.editorActions.TypedHandlerDelegate
 import com.intellij.openapi.editor.Editor
 import com.intellij.openapi.project.Project
+import com.intellij.psi.PsiDocumentManager
 import com.intellij.psi.PsiFile
 
 class DevInTypedHandler : TypedHandlerDelegate() {

exts/devin-lang/src/main/kotlin/cc/unitmesh/language/completion/CustomVariable.kt

@@ -0,0 +1,19 @@
+package cc.unitmesh.language.completion
+
+enum class CustomVariable(val variable: String, val description: String) {
+    SELECTION("selection", "The selected text"),
+    BEFORE_CURSOR("beforeCursor", "The text before the cursor"),
+    AFTER_CURSOR("afterCursor", "The text after the cursor"),
+    FILE_NAME("fileName", "The name of the file"),
+    FILE_PATH("filePath", "The path of the file"),
+    METHOD_NAME("methodName", "The name of the method"),
+    LANGUAGE("language", "The language of the file"),
+    COMMENT_SYMBOL("commentSymbol", "The comment symbol of the language"),
+    FRAMEWORK_CONTEXT("frameworkContext", "The context of the framework"),
+
+    ;
+
+    companion object {
+        fun all(): List<CustomVariable> = values().toList()
+    }
+}

exts/devin-lang/src/main/kotlin/cc/unitmesh/language/completion/VariableProvider.kt

@@ -3,6 +3,7 @@ package cc.unitmesh.language.completion
 import com.intellij.codeInsight.completion.CompletionParameters
 import com.intellij.codeInsight.completion.CompletionProvider
 import com.intellij.codeInsight.completion.CompletionResultSet
+import com.intellij.codeInsight.lookup.LookupElementBuilder
 import com.intellij.util.ProcessingContext
 
 class VariableProvider: CompletionProvider<CompletionParameters>() {
@@ -11,9 +12,10 @@ class VariableProvider: CompletionProvider<CompletionParameters>() {
         context: ProcessingContext,
         result: CompletionResultSet,
     ) {
-//        CustomVariable.all.forEach {
-//            result.addElement(it.toLookupElement())
-//        }
-    }
+        CustomVariable.all().forEach {
+            val withTypeText = LookupElementBuilder.create(it.variable).withTypeText(it.description, true)
 
+            result.addElement(withTypeText)
+        }
+    }
 }

exts/devin-lang/src/main/kotlin/cc/unitmesh/language/psi/DevInFile.kt

@@ -7,6 +7,6 @@ import com.intellij.openapi.fileTypes.FileType
 import com.intellij.psi.FileViewProvider
 
 class DevInFile(viewProvider: FileViewProvider) : PsiFileBase(viewProvider, DevInLanguage) {
-    override fun getFileType(): FileType = DevInFileType
+    override fun getFileType(): FileType = DevInFileType.INSTANCE
 
 }

exts/devin-lang/src/main/resources/cc.unitmesh.language.xml

@@ -11,7 +11,7 @@
         <lang.ast.factory language="DevIn"
                           implementationClass="cc.unitmesh.language.DevInAstFactory"/>
 
-<!--        <typedHandler implementation="cc.unitmesh.language.DevInTypedHandler"/>-->
+        <typedHandler implementation="cc.unitmesh.language.DevInTypedHandler"/>
 
         <completion.contributor language="DevIn"
                                 implementationClass="cc.unitmesh.language.DevInCompletionContributor"/>

plugin/src/main/resources/META-INF/plugin.xml

@@ -35,5 +35,6 @@
         <module name="cc.unitmesh.database"/>
         <module name="cc.unitmesh.android"/>
         <module name="cc.unitmesh.harmonyos"/>
+        <module name="cc.unitmesh.language"/>
     </content>
 </idea-plugin>